# `Quarter`

A quarter of a calendar year, written `2026-Q4`: `quarter` from 1 to 4.

[Time and calendar](types.md#time-and-calendar); ordered; since Jadpo 0.1.0.

## Make one

Build one from its fields, `Quarter { year: ...  quarter: ... }`.

`text.parse(raw, as: Quarter)` reads one from its text; text that isn't one at all fails `malformed`, such as `2026-Q5`, `2026-Q0` or `2026Q1`.

## Fields

| Field | Type |
|---|---|
| `year` | `Int` |
| `quarter` | `Int` |

## Text, JSON and storage

`text.from` writes its canonical text, the one form `text.parse` reads back. JSON sends its canonical text as a string.

| Text | JSON |
|---|---|
| `2026-Q1` | `"2026-Q1"` |
| `2026-Q4` | `"2026-Q4"` |

It is stored in 2 columns, each named for the field, `_` and its suffix. This is `2026-Q4`:

| Column | Type | Holds |
|---|---|---|
| `<field>_year` | `smallint` | `2026` |
| `<field>_quarter` | `smallint` | `4` |

## Shown to people

`text.format(value, locale:)` shows it to people in their locale.

With `locale: Locale.en_gb`:

| Value | Shown |
|---|---|
| `2026-Q1` | `2026-Q1` |
| `2026-Q4` | `2026-Q4` |

## Operations

It has the contract's own operations: `text.parse`, `text.from`, `text.format`, `json.read`, `json.write` and `==`. It is ordered, so `<` and sorting take it. [Every standard type meets one contract](../topics/every-standard-type-meets-one-contract.md) says how they work.